Ford 9" 4.86 Pro Gear with 28 Spline Pinion Richmond Gear - Produced in Italy


Part Number: RPF90486S

Designed For Drag Racing Only

Pro Gears may be necessary when tooth breakage occurs with Standard gear sets
Produced from a softer material, the teeth can flex as opposed to crack and break

The life expectancy can vary anywhere from 15 to 300 runs depending on the vehicle
If a Standard gear provided acceptable life, a Pro gear may not be the right choice

Machined From 9310 Forged Steel
Heat Treated to Optimize Material Properties
Matched Ring & Pinion Set

Ring Gear
– 9″ OD
– Tooth count 34
– 10 bolt holes in each bolt size
– 7/16″-20 RH threads & 1/2″-20 RH threads

– 28 spline shaft
– Tooth count 7
– 3/4″-20 RH threads

Unsure about your application?
Please contact a Strange Sales Associate to discuss your vehicle


Using Tapered Bearing Pinion Support
Daytona style………………. R5236 / R5236WR
HD Pro & Drag race…….. R5237 / R5237WR
Ultra case……………….. R5237UC / R5237UCR

Using Ball Bearing Pinion Support
HD Pro & Drag Race…… R5237B / R5237BR
Ultra & Billet cases… R5237UCB / R5237UCBR

Order any Gear Set Online and get free delivery and handling on your entire order! UPS Ground Only. Offer excludes truck freight and oversize fees. Valid on online orders shipped in the contiguous United States.


Ford 9″ 4.86 28 Spl Pro Gear Richmond Gear